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Updated: May 10, 2026

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Rous サルコマウイルスによる変異:変異特有のタンパク質リン酸化のための細胞基板には,フォスフォチロシンが含まれています
Cell
|October 1, 1980
まとめ
ルース・サーコマウイルス (RSV) の変異には,タンパク質キナーゼをコードするウイルス遺伝子,SRCが含まれています. このキナーゼは36Kポリペプチドをリン酸化し,これは細胞変容の重要な出来事である.
科学分野:
- 分子生物学は分子生物学である.
- ウイルス学 ウイルス学 ウイルス学
- 細胞生物学 細胞生物学
背景:
- 鶏の胚繊維芽細胞のルース・サルコマウイルス (RSV) 変異は,ウイルス src 遺伝子によって媒介されます.
- src遺伝子は,変換に不可欠なキナーゼ活性を持つタンパク質 pp60src をコードします.
研究 の 目的:
- RSVで変異した細胞に含まれる36Kフォスフォタンパク質の前駆者を特定する.
- この36Kポリペプチドのリン酸化におけるpp60srcの役割を明らかにする.
主な方法:
- 36Kポリペプチドを検出するために32Pラベル付きのフォスフォタンパク質の二次元電泳.
- リン酸化および非リン酸化36Kポリペプチドを比較するために,限られたタンパク質分解とトリプティックペプチドマッピング.
主要な成果:
- フォスフォロタンパク質に同質な非フォスフォリ化36Kポリペプチドは,正常細胞と変形細胞の両方で特定されました.
- 36Kフォスフォタンパク質には,フォスフォチロシンとフォスフォセリンが含まれており,pp60srcキナーゼ活性のための基質であることを示しています.
結論:
- 36Kフォスフォタンパク質は,pp60srcによって36Kポリペプチドのリン酸化によって生成されます.
- この36Kポリペプチドのリン酸化は,RSVによって誘発される細胞変異に極めて重要である可能性が高い.
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